Shutter-worker



(No Model.)

- J. T. WILDE.

SHUTTER WORKER.

Patented Mar. 8,-188'7.

UNITED STATES PATENT OFFICE.

JOHN T. VILDE, OF NEWARK, NE\V JERSEY.v

SHUTTER-WORKER.

SPECIFICATION forming part of Letters Patent No. 358,998, dated March1887.

Application filed October 29, 1886. SerialNo. 217,507.

To all whom it may concern:

Be it known that I, JOHN T. WILDE, asubject of the Queen of GreatBritain, residing at Newark, Essex county, New Jersey, have inventedcertain new and useful Improve ments in Shutter-\Vorkers, fullydescribed and represented in the following specification and theaccompanying drawings, forming a part of the same. I

This invention relates to that class of shutter-workers which have apinion attached by means of a bracket to the shutter, the same forming apart of the lower hinge for the shutter, such pinion engaging with arack-bar extended through the casing to operate the shutter from theinside of the same; and the invention consists in the particularconstruction hereinafter described and claimed.

My invention will be understood by reference to the annexed drawings, inwhich- Figure 1 is a sectional plan of the shutter when closed, and thewindow-frame, showing, also, a plan of the shutter-worker appliedthereto. Fig. 2 is a View of the same from the outside of the shutter.Fig. 3 is a side view of a split bushing forming a part of the clampingdevice, and Fig. 4 is a plan of the same. Fig. 5 is a longitudinalsection of the collar which acts in conjunction with the split bushingfor clamping the rack-barin place, and Fig. 6 is a plan of the same.Figs. 3 to 6, inclusive, are drawn upon a larger scale than Figs. 1 and2.

a is the shutter; 22, the window-frame; c, the pinion, constructedintegral with the foot (I, attached to the hinge upon thewindow-shutter. d is the foot of the hinge attached to the window-frame,which supports a pintle, c, as in ordinary shutter-hinges, to act as apivot for the pinion c.

e is the outer or rack section of the rackbar, provided with a threadedsocket, f, at its inner end, and held in position laterally by thesleeve 6.

g is the outer section or shank of the handie-bar, provided with ascrewthread and adapted to screw into the socket f. At the inner endthis outer section is pivoted to the inner section, h, of the handlebar,which is provided at its opposite end with a handle, 2', to operate thewhole.

It will be seen that by turning the handle t, and thereby causing theouter section, 9, to be screwed into or out of the threaded socket f,

(No model.)

the length of the rack-bar may be varied to fit the window-casing towhich the shutterworker is applied, but this construction for therack-bar isnot necessary in order to apply my clamp to the mechanism.

The clamping device consists in a bushing, m, provided with acylindrical aperture, a, through which the inner end of the rack-barpasses, and slit at 0 to admit of its contraction when its outer surfaceis pressed inward. This bushing is provided with a flange, p, by whichit is fastened to the inner side of the window-casing, the surface ofthe bushing be ing slightly tapered outward and provided with ascrew-thread. A threaded collar or nut, 1*, when screwed upon thethreaded bushing, serves to contract the aperture a, and thus to graspthe rack-bar and clamp it firmly in place. In the drawings I have shownthis nut providcdwith a handle, .9, projecting from one side of it; butthis is not necessary to its operation, although I prefer to employ suchconstruction in manufacturing the device. This clamping device isintended more particularly for clamping the shank of the rackbar when itis desired to hold the shutter entirely or partly closed; but when it isused the pivotal joint in the rack-bar may be dispensed with as a meansfor locking the shutter open, since my clamping device affords amplesecurity against the movement of the rack-bar.

Having thus described my invention, what I claim herein is In ashutter-worker comprising a rack-bar operating independently of theshutter and through the window frame, and a pinion mounted upon a footsecured to the frame and engaged by said rack-bar, the combination, withthe longitudinally-movable rack-bar, of the split bushing attached tothe inner side of the window-frame and fitted to the shank of suchrack-bar, the bushing having a tapering screw-thread upon its exterior,and a nut adapted to turn upon such thread to compress the bushing uponthe shank, as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JOHN '1. WILDE. Vitnesses:

HENRY J. MILLER, HENRY J. THEBERATH.

